radiation

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Across
  1. 2. Inferred _____
  2. 4. what heats earth outward
  3. 6. what is the transfer of heat in the form of waves
Down
  1. 1. ______ Waves
  2. 3. _____ Waves
  3. 5. what are radiators made out of
  4. 7. _____ waves